Siemens SINUMERIK 840DE Programming Manual page 9

Table of contents
Preface ...................................................................................................................................................... iii
1 Fundamental Geometrical Principles ...................................................................................................... 1-1
1.1 Description of workpiece points ................................................................................................. 1-1
1.1.1 Workpiece coordinate systems .................................................................................................. 1-1
1.1.2 Definition of workpiece positions................................................................................................ 1-2
1.1.3 Polar coordinates ....................................................................................................................... 1-5
1.1.4 Absolute dimensions.................................................................................................................. 1-5
1.1.5 Incremental dimension............................................................................................................... 1-7
1.1.6 Plane designations..................................................................................................................... 1-8
1.2 Position of zero points.............................................................................................................. 1-10
1.3 Position of coordinate systems ................................................................................................ 1-11
1.3.1 Overview of various coordinate systems ................................................................................. 1-11
1.3.2 Machine coordinate system ..................................................................................................... 1-12
1.3.3 Basic coordinate system .......................................................................................................... 1-15
1.3.4 Workpiece coordinate system.................................................................................................. 1-17
1.3.5 Frame system .......................................................................................................................... 1-18
1.3.6 Assignment of workpiece coordinate system to machine axes ............................................... 1-20
1.3.7 Current workpiece coordinate system ..................................................................................... 1-21
1.4 Axes ......................................................................................................................................... 1-22
1.4.1 Main axes/Geometry axes ....................................................................................................... 1-23
1.4.2 Special axes............................................................................................................................. 1-24
1.4.3 Main spindle, master spindle ................................................................................................... 1-24
1.4.4 Machine axes ........................................................................................................................... 1-24
1.4.5 Channel axes ........................................................................................................................... 1-25
1.4.6 Path axes ................................................................................................................................. 1-25
1.4.7 Positioning axes ....................................................................................................................... 1-25
1.4.8 Synchronized axes................................................................................................................... 1-26
1.4.9 Command axes ........................................................................................................................ 1-27
1.4.10 PLC axes.................................................................................................................................. 1-27
1.4.11 Link axes .................................................................................................................................. 1-27
1.4.12 Lead link axes .......................................................................................................................... 1-28
1.5 Coordinate systems and workpiece machining ....................................................................... 1-30
2 Fundamental Principles of NC Programming .......................................................................................... 2-1
2.1 Structure and contents of an NC program ................................................................................. 2-1
2.2 Language elements of the programming language ................................................................... 2-2
2.3 Programming a sample workpiece........................................................................................... 2-21
2.4 First programming example for milling application .................................................................. 2-22
2.5 Second programming example for milling application ............................................................. 2-23
2.6 Programming example for turning application ......................................................................... 2-26
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
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